Ericsson DIALOG 4422 - Manual (Page 72)

Other Useful Features
Dialog 4422 IP Office 72
Night Service
When the telephone system is in Night Service mode, all your
incoming calls to the operator are transferred to a selected
extension or group of extensions. The telephone system has three
different Night Service modes:
Common Night Service
All incoming calls to the operator are transferred to one specific
extension. Answer the call in the normal way.
Individual Night Service
Selected external calls to the operator are transferred to one
specific extension. Answer the call in the normal way.
Universal Night Service
All incoming calls to the operator are transferred to a universal
signalling device, for example the common bell. Answer the call as
described in section “ Common Bell Group ” on page 68.